#include <bits/stdc++.h>
using namespace std;
using namespace chrono;

using ll = long long;
using ull = unsigned long long;

string to_string(const string &s) {
  return '"' + s + '"';
}

string to_string(bool b) {
  return b ? "true" : "false";
}

template <typename A, typename B>
string to_string(const pair<A, B> &p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}

template <typename T>
string to_string(const T &v) {
  string s = "{";
  bool first = true;
  for (const auto &it : v) {
    if (!first)
      s += ", ";
    else
      first = false;
    s += to_string(it);
  }
  return s += "}";
}

void debug_out() {
  cerr << endl;
}

template <typename T, typename... Args>
void debug_out(const T &first, const Args&... rest) {
  cerr << to_string(first) << " ";
  debug_out(rest...);
}

#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

auto startTime = high_resolution_clock::now();
int get_time() {
  auto stopTime = chrono::high_resolution_clock::now();
  auto duration = duration_cast<milliseconds>(stopTime - startTime);
  return duration.count(); // in ms
}

struct node {
  ll r, d; 
};

const int DIM = 3e5 + 5;
const ll INF = 1e18;

int nr;
int c[4 * DIM];
node arb[4 * DIM];

void build(int st, int dr, int nod) {
  arb[nod].r = arb[nod].d = c[nod];
  if (st == dr) {
    arb[nod].d = c[nod];
    return;
  }

  int mij = (st + dr) / 2;
  build(st, mij, nod * 2);
  build(mij + 1, dr, nod * 2 + 1);

  arb[nod].d = min(arb[nod].d, arb[nod * 2].d + arb[nod * 2 + 1].d);
}

void update(int x, int y) {
  arb[x].r = y;
  while (x > 0) {
    arb[x].d = arb[x].r;
    if (x * 2 <= nr) {
      arb[x].d = min(arb[x].d, arb[x * 2].d + arb[x * 2 + 1].d);
    }
    x >>= 1;
  }
}

ll query(int x, int y, ll up, int st, int dr, int nod) {
  if (x <= st && dr <= y) {
    return min(up, arb[nod].d);
  }
  
  int mij = (st + dr) / 2;
  ll ans = 0;
  if (x <= mij) {
    ll nup = min(arb[nod].d, up) + arb[nod * 2 + 1].d;
    ans += query(x, y, nup, st, mij, nod * 2);
  }
  if (mij + 1 <= y) {
    ll nup = min(arb[nod].d, up) + arb[nod * 2].d;
    ans += query(x, y, nup, mij + 1, dr, nod * 2 + 1);
  }

  return ans;
}

void solve() {
  int n;
  cin >> n;

  int l = (1 << n);
  nr = l * 2 - 1;
  for (int i = 1; i <= nr; ++i) {
    cin >> c[i];
  }


  build(0, l - 1, 1);

  int q;
  cin >> q;

  for (int i = 1; i <= q; ++i) {
    int t, x, y;
    cin >> t >> x >> y;
    if (t == 1) {
      update(x, y);
    } else {
      ll ans = INF;
      if (x > y)
        swap(x, y);

      if (x == y) {
        cout << 0 << "\n";
        continue;
      }
      cout << query(x, y, INF, 0, l - 1, n) << "\n";
    }
  }
}

int main() {
  cin.tie(NULL);
  ios_base::sync_with_stdio(false);

  int t = 1;
//  cin >> t;
  while (t--)
    solve();

  return 0;
}